Overview: The Next Generation Mass Storage Stack (September 2009)
Table Of Contents
- Abstract
- Background
- Features of the Next Generation Mass Storage Stack
- Impact
- Background
- Impact
- Background
- Impact
- Background
- Impact
- Impact
- Introduction to the Agile View
- Changes to I/O and Mass Storage Subsystems
- Changes to Other Subsystems
- Migrating to the Agile View
- Conclusion
- Glossary
- Appendix A: Summary of Changes
- Appendix B: Using ioscan
- Appendix C: Using scsimgr
- Appendix D: Interpreting Lunpath Hardware Paths
- For more information
47
To show the mapping of LUN hardware paths to lunpath hardware paths, use ioscan with the –m lun option.
For example:
# ioscan -m lun
Class I Lun H/W Path Driver S/W State H/W Type Health Description
=======================================================================
disk 47 64000/0xfa00/0x0 esdisk CLAIMED DEVICE online HP 36.4GST336753LC
0/1/1/0.0x1.0x0
/dev/disk/disk47 /dev/rdisk/disk47
/dev/disk/disk47_p1 /dev/rdisk/disk47_p1
/dev/disk/disk47_p2 /dev/rdisk/disk47_p2
/dev/disk/disk47_p3 /dev/rdisk/disk47_p3
disk 48 64000/0xfa00/0x1 esdisk CLAIMED DEVICE online HP 36.4GST336753LC
0/1/1/0.0x0.0x0
/dev/disk/disk48 /dev/rdisk/disk48
/dev/disk/disk48_p1 /dev/rdisk/disk48_p1
/dev/disk/disk48_p2 /dev/rdisk/disk48_p2
/dev/disk/disk48_p3 /dev/rdisk/disk48_p3
ctl 4 64000/0xfa00/0x2 esctl NO_HW DEVICE online HP MSA CONTROLLER
0/2/1/0.0x500805f300083899.0x0
0/2/1/0.0x500805f300083891.0x0
0/4/1/0.0x500805f300083899.0x0
0/4/1/0.0x500805f300083891.0x0
/dev/pt/pt4 /dev/pt/pt_ctl4
disk 49 64000/0xfa00/0x3 esdisk NO_HW DEVICE offline HP MSA VOLUME
0/2/1/0.0x500805f300083899.0x4011000000000000
0/2/1/0.0x500805f300083891.0x4011000000000000
0/4/1/0.0x500805f300083899.0x4011000000000000
0/4/1/0.0x500805f300083891.0x4011000000000000
/dev/disk/disk49 /dev/rdisk/disk49
disk 50 64000/0xfa00/0x4 esdisk NO_HW DEVICE offline HP MSA VOLUME
0/2/1/0.0x500805f300083899.0x4010000000000000
0/2/1/0.0x500805f300083891.0x4010000000000000
0/4/1/0.0x500805f300083899.0x4010000000000000
0/4/1/0.0x500805f300083891.0x4010000000000000
/dev/disk/disk50 /dev/rdisk/disk50
disk 57 64000/0xfa00/0xb esdisk NO_HW DEVICE offline HP MSA VOLUME
0/2/1/0.0x500805f300083899.0x4009000000000000
0/2/1/0.0x500805f300083891.0x4009000000000000
0/4/1/0.0x500805f300083899.0x4009000000000000
0/4/1/0.0x500805f300083891.0x4009000000000000
/dev/disk/disk57 /dev/rdisk/disk57
disk 58 64000/0xfa00/0xc esdisk NO_HW DEVICE offline HP MSA VOLUME
0/2/1/0.0x500805f300083899.0x4008000000000000
0/2/1/0.0x500805f300083891.0x4008000000000000
0/4/1/0.0x500805f300083891.0x4008000000000000
0/4/1/0.0x500805f300083899.0x4008000000000000
/dev/disk/disk58 /dev/rdisk/disk58
disk 59 64000/0xfa00/0xd esdisk NO_HW DEVICE offline HP MSA VOLUME
0/2/1/0.0x500805f300083899.0x4007000000000000
0/2/1/0.0x500805f300083891.0x4007000000000000
0/4/1/0.0x500805f300083899.0x4007000000000000
0/4/1/0.0x500805f300083891.0x4007000000000000
/dev/disk/disk59 /dev/rdisk/disk59
disk 60 64000/0xfa00/0xe esdisk CLAIMED DEVICE online TEAC DV-28E-B
0/0/2/0.0.0x0.0x0
/dev/disk/disk60 /dev/rdisk/disk60